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Fudgin [204]
3 years ago
9

Help would be appreciated​

Mathematics
1 answer:
Vesnalui [34]3 years ago
4 0

Answer:

<u>5x+10</u>

27x

Step-by-step explanation:

cross multiply

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Solve problems 3, 7, 15, 17, 19, 20, 21
7nadin3 [17]
3. | -9 | = 9

7. - | -5 * -7 | = - | 35 | = -35

15. | m + 3 | = 7
    
      m + 3 = 7          -(m + 3) = 7
      m = 7 - 3           -m - 3 = 7
      m = 4                -m = 10
                                m = -10

       so m = 4 and m = -10

17. | -3d | = 15
  
      -3d = 15               -(-3d) = 15
         d = 15/-3               3d = 15
         d = - 5                    d = 15/3
                                        d = 5
     
         so d = 5 and d = -5

19. | 4b - 5 | = 19
  
      4b - 5 = 19             -(4b - 5) = 19
      4b = 19 + 5            -4b + 5 = 19
      4b = 24                   -4b = 14
        b = 24/4                  b = 14/-4
        b = 6                       b = - 7/2

         so b = 6 or b = -7/2

20. | x - 1 | + 5 = 2
      | x - 1 | = 2 - 5
      | x - 1 | = -3
There is no solution on this one because an absolute value cannot equal a negative number

21. -4 | 8 - 5n | = 13
          | 8 - 5n | = - 13/4
  There is also no solution for this one because of the same reason...absolute values cannot equal negative numbers
8 0
3 years ago
Right triangles 1,2 and 3 are given to its all their angle measures and approximate side lengths
Ede4ka [16]

Answer:

5.4 units

Step-by-step explanation:

From the figure ,it's clear that   sin(50) = PQ/7

Then

PQ = 7×sin(50) = 5.362311101833

Therefore the approximate length of PQ I saw 5.4

6 0
2 years ago
5 × 1/ 2 A) More than 5 because you are multiplying by a whole number
sertanlavr [38]
D, hope this helps because 1/2 is less than 1. and 5*1/2 is 2.5 and that is less than 5

6 0
3 years ago
Is the additive inverse of an integer always negative? Explain.
andre [41]

Answer:

Step-by-step explanation:

We do not consider zero to be a positive or negative number. For each positive integer, there is a negative integer, and these integers are called opposites. For example, -3 is the opposite of 3, -21 is the opposite of 21, and 8 is the opposite of -8. ... If an integer is less than zero, we say that its sign is negative

3 0
3 years ago
How do you solve systems of equations using matrices? I need help with the steps please
seraphim [82]
The objective function is simply a function that is meant to be maximized. Because this function is multivariable, we know that with the applied constraints, the value that maximizes this function must be on the boundary of the domain described by these constraints. If you view the attached image, the grey section highlighted section is the area on the domain of the function which meets all defined constraints. (It is all of the inequalities plotted over one another). Your job would thus be to determine which value on the boundary maximizes the value of the objective function. In this case, since any contribution from y reduces the value of the objective function, you will want to make this value as low as possible, and make x as high as possible. Within the boundaries of the constraints, this thus maximizes the function at x = 5, y = 0.

6 0
3 years ago
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